Reynolds number (RN) is given by (where h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ρ = Density of fluid, cp = Specific heat at constant pressure, and μ = Coefficient of absolute viscosity)

Heat and Mass Transfer
Reynolds number (RN) is given by (where h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ρ = Density of fluid, cp = Specific heat at constant pressure, and μ = Coefficient of absolute viscosity)

RN = hl/k

RN = ρ V l /μ

RN = V²/t.cp

RN = μ cp/k

RN = hl/k

RN = ρ V l /μ

RN = V²/t.cp

RN = μ cp/k

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Heat and Mass Transfer
The energy distribution of an ideal reflector at higher temperatures is largely in the range of

Shorter wavelength

Wavelength has nothing to do with it

Remain same at all wavelengths

Longer wavelength

Shorter wavelength

Wavelength has nothing to do with it

Remain same at all wavelengths

Longer wavelength

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Heat and Mass Transfer
The time constant of a thermocouple is

Determined by the time taken to reach 100°C from 0°C

The time taken to attain 50% of the value of initial temperature difference

The time taken to attain the final temperature to be measured

The time taken to attain 63.2% of the value of initial temperature difference

Determined by the time taken to reach 100°C from 0°C

The time taken to attain 50% of the value of initial temperature difference

The time taken to attain the final temperature to be measured

The time taken to attain 63.2% of the value of initial temperature difference

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Heat and Mass Transfer
The amount of radiation mainly depends on

Type of surface of body

Temperature of body

All of these

Nature of body

Type of surface of body

Temperature of body

All of these

Nature of body

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Heat and Mass Transfer
Temperature of steam at around 540°C can be measured by

Thermometer

None of these

Thermocouple

Thermistor

Thermometer

None of these

Thermocouple

Thermistor

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Heat and Mass Transfer
The process of heat transfer from one particle of the body to another is called conduction, when the particles of the body

Does not affect the intervening medium

Do not move actually

Move actually

Affect the intervening medium

Does not affect the intervening medium

Do not move actually

Move actually

Affect the intervening medium

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Heat and Mass Transfer

Heat and Mass Transfer Reynolds number (RN) is given by (where h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ρ = Density of fluid, cp = Specific heat at constant pressure, and μ = Coefficient of absolute viscosity)

Heat and Mass Transfer The energy distribution of an ideal reflector at higher temperatures is largely in the range of

Heat and Mass Transfer The time constant of a thermocouple is

Heat and Mass Transfer The amount of radiation mainly depends on

Heat and Mass Transfer Temperature of steam at around 540°C can be measured by

Heat and Mass Transfer The process of heat transfer from one particle of the body to another is called conduction, when the particles of the body

Heat and Mass Transfer
Reynolds number (RN) is given by (where h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ρ = Density of fluid, cp = Specific heat at constant pressure, and μ = Coefficient of absolute viscosity)

Heat and Mass Transfer
The energy distribution of an ideal reflector at higher temperatures is largely in the range of

Heat and Mass Transfer
The time constant of a thermocouple is

Heat and Mass Transfer
The amount of radiation mainly depends on

Heat and Mass Transfer
Temperature of steam at around 540°C can be measured by

Heat and Mass Transfer
The process of heat transfer from one particle of the body to another is called conduction, when the particles of the body